161266683 has 8 divisors (see below), whose sum is σ = 220833808. Its totient is φ = 104605344.

The previous prime is 161266643. The next prime is 161266711. The reversal of 161266683 is 386662161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161266683 - 2¹⁰ = 161265659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161266643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 726316 + ... + 726537.

It is an arithmetic number, because the mean of its divisors is an integer number (27604226).

Almost surely, 2^161266683 is an apocalyptic number.

161266683 is a deficient number, since it is larger than the sum of its proper divisors (59567125).

161266683 is a wasteful number, since it uses less digits than its factorization.

161266683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452893.

The product of its digits is 62208, while the sum is 39.

The square root of 161266683 is about 12699.0819746941. The cubic root of 161266683 is about 544.3123870361.

The spelling of 161266683 in words is "one hundred sixty-one million, two hundred sixty-six thousand, six hundred eighty-three".